Amazon.com: New Dual DLS12 12-Inch 875 Watts 4-Ohm Car Audio Power Subwoofer Sub DLS-12 : Electronics
Amazon.com: Dual Electronics SBX212i 12-inch illumiNITE High Performance Studio Enclosed Subwoofers with 1,200 Watts of Peak Power & 41-Ounce Magnets : Electronics
Polk Audio DB 1242 DVC DB+ Series shallow-mount 12" subwoofer with dual 4-ohm voice coils at Crutchfield
Rockville DV12K6D2 Dual 12" 4800w Car Audio Subwoofers Plexi Sub Enclosure Box - Rockville Audio